You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
79 lines
1.8 KiB
79 lines
1.8 KiB
function getTrace(node) {
|
|
function shouldPutToTrace(syntax) {
|
|
if (syntax === null) {
|
|
return false;
|
|
}
|
|
|
|
return (
|
|
syntax.type === 'Type' ||
|
|
syntax.type === 'Property' ||
|
|
syntax.type === 'Keyword'
|
|
);
|
|
}
|
|
|
|
function hasMatch(matchNode) {
|
|
if (Array.isArray(matchNode.match)) {
|
|
// use for-loop for better perfomance
|
|
for (var i = 0; i < matchNode.match.length; i++) {
|
|
if (hasMatch(matchNode.match[i])) {
|
|
if (shouldPutToTrace(matchNode.syntax)) {
|
|
result.unshift(matchNode.syntax);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
}
|
|
} else if (matchNode.node === node) {
|
|
result = shouldPutToTrace(matchNode.syntax)
|
|
? [matchNode.syntax]
|
|
: [];
|
|
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
var result = null;
|
|
|
|
if (this.matched !== null) {
|
|
hasMatch(this.matched);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
function testNode(match, node, fn) {
|
|
var trace = getTrace.call(match, node);
|
|
|
|
if (trace === null) {
|
|
return false;
|
|
}
|
|
|
|
return trace.some(fn);
|
|
}
|
|
|
|
function isType(node, type) {
|
|
return testNode(this, node, function(matchNode) {
|
|
return matchNode.type === 'Type' && matchNode.name === type;
|
|
});
|
|
}
|
|
|
|
function isProperty(node, property) {
|
|
return testNode(this, node, function(matchNode) {
|
|
return matchNode.type === 'Property' && matchNode.name === property;
|
|
});
|
|
}
|
|
|
|
function isKeyword(node) {
|
|
return testNode(this, node, function(matchNode) {
|
|
return matchNode.type === 'Keyword';
|
|
});
|
|
}
|
|
|
|
module.exports = {
|
|
getTrace: getTrace,
|
|
isType: isType,
|
|
isProperty: isProperty,
|
|
isKeyword: isKeyword
|
|
};
|